like I said in my post it's enquiry for a friend, iv been married 15 years with 2 daughters and been living here for the past 14 years, my friend is getting a bit worried because he comes on visa exempt and extends every time, imagration will pick up on it soon, with to many entries and extensions
Along with the invertation letter, add photos of your family home where your wife will be staying, inside and out, ie bedroom, living room ,and garden it all helps, but like others have said ,you must send proof of a reason for her to return, ie land ownership, money in the bank ,children if any, if you know anyone who owns a big business ask them for a letter stating she has a good job to go back to. Lots of hoops to jump through. Good luck